11 results found containing all search terms.
... Science Frontiers ONLINE No. 40: Jul-Aug 1985 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Planets as sun-triggered lasers Apparently both the earth and Jupiter emit radio energy when triggered by bursts of radio waves arriving from the sun. The outer atmospheres of these planets act like radio lasers, which store radio energy and then release it suddenly when stimulated by weaker solar signals. The earth's laser operates between frequencies of 50 and 600 kilohertz. Its emissions are known as the "auroral kilometric radiation" or AKR. While some of these terrestrial emissions are spontaneous, others are stimulated by Type-III solar radio bursts. The newly discovered Jovian laser operates at hectometric wavelengths and is also triggered by the solar radio bursts. ... Calvert, W.; "Triggered Jovian Radio Emissions," Geophysical Research Letters, 12:179, 1985.) Comment. Earth and Jupiter thus act like radio transponders, releasing large bursts in response to small solar stimuli. The role of electricity in the history of the solar system is only beginning to be appreciated. Of course, the radio lasers mentioned above are not very powerful, but what might have occurred during the formative stages of the solar system? Could electromagnetic forces have been more important then than they are now? In this regard, note that electrical forces seem to be strongly involved in the dynamics of Saturn's rings. And Saturn's rings themselves may resemble a miniature solar system in the accretion phase. From Science Frontiers #40, JUL-AUG ...
Terms matched: 2 - Score: 274 - 15 May 2017 - URL: /sf040/sf040p03.htm
... Science Frontiers ONLINE No. 98: Mar-Apr 1995 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects A Yagi Watches A Solar Eclipse During the partial solar eclipse of July 11, 1991, D. Emerson had his Yagi antenna pointed in the direction of the phenomenon. His receiver was tuned to 145.8 MHz. The sun is always emitting radio noise, and one would expect that the moon passing in front of the sun would gradually cut off most, but not all, of the radio noise picked up by the antenna and, after the eclipse's midpoint, the noise would increase back to normal levels. Instead of the expected: Radio noise power measured during a partial solar eclipse. The arrows indicate the stages of the ... "There was no radio evidence of any effect of the solar eclipse until 1822 UTC, 58 minutes after the start of the eclipse. At that point, all detectable solar emission disappeared within the space of about nine minutes. The emission did not start to reappear until 72 minutes later, at 1943 UTC, and was fully restored by 1951 UTC, 13 minutes before the end of the eclipse, which occurred at 2004 UTC. "The fact that radio emission disappeared and reappeared fairly abruptly part way through the eclipse indicates that most of the radio emission was occurring from one discrete point on the sun's surface rather than from the entire solar disc." (Emerson, Darrel; "Radio Observations of Two Solar Eclipses," QST , p. 21, February 1995. Cr ...
Terms matched: 2 - Score: 252 - 15 May 2017 - URL: /sf098/sf098a06.htm
... Science Frontiers ONLINE No. 94: Jul-Aug 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mystery Radio Bursts "Mysterious double bursts of radio emissions, originating near the surface of the earth, have been detected by a small satellite designed to spot nuclear blasts. "Although the powerful pulses of electromagnetic energy occur predominantly at times of day favored by thunderstorms, they are not accompanied by flashes of visible light and they do not resemble the emissions generated by classic lightning." Since November 5, 1993, about 100 of these bursts have been detected by a special radio receiver named "Blackbird" mounted on the Alexis satellite. Most of the bursts have been recorded over Africa and South America, although they may also be frequent elsewhere ... are drowned out by man-made radio noise from the ground. The bursts come in pairs that are separated by 40 microseconds. The frequency dispersion of the bursts indicates that the signals have passed through the earth's ionosphere before reaching the satellite. Most bursts are picked up in the afternoon and early morning. There is some speculation that the bursts may be associated with the flashes of light recently reported above storm systems. (SF#90) (Quote from: Sawyer, Kathy; "Electrodynamics: Strange Bursts from the Sky," Washington Post, February 14, 1994. Also: Monastersky, R.; "Puzzling Atmospheric Bursts Spark Interest," Science News, 145:100, 1994. Hecht, Jeff; "Satellite Tunes in to Mystery Radio Bursts," ...
Terms matched: 2 - Score: 242 - 15 May 2017 - URL: /sf094/sf094g14.htm
... flew directly over the pole, the complete scene has to be created by 'stretching' a series of photographs taken from the side as Saturn rotated, then fitting them into a polar projection." The straight sides of the hexagon are each about 13,800 kilometers long. The entire structure rotates with a period of 10h 39m 24s, the same period as that of the planet's radio emissions, which is assumed to be equal to the period of rotation of Saturn's interior. The hexagonal feature does not shift in longitude like the other clouds in the visible atmosphere. The pattern's origin is a matter of much speculation. Most astronomers seem to favor some sort of standing-wave pattern in the atmosphere; but the hexagon might be a novel sort of aurora ... More extreme speculation has Saturn's radio emissions emanating from the hexagon (something we can see and which has the right rotation period) rather than from the planet's interior (something we cannot see). (Anonymous; "A Hex on Saturn," Sky and Telescope, 77:246, 1989.) Comment. Note the similarities between the hexagon and the radial spoke structure sometimes seen in the atmosphere of Venus, as described in AVO6 in our catalog: The Moon and the Planets. Ordering details for this book are here . From Science Frontiers #63, MAY-JUN 1989 . 1989-2000 William R. Corliss ...
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... Noise Prior To Earthquakes March 31, 1980. Tokyo, Japan. Anomalously high electromagnetic noise was recorded during a 30-minute period preceding a magnitude 7 quake, 250 km away and 480 km deep. The emissions were detected between 10 and 1500 Hz and around 81 kHz. July 24-28, 1976. Tangshan, China. For 3-5 days before the Tangshan earthquake, unusual radio interference was experienced within 250 km of Tangshan. Several similar cases are also on record, including one in which the radio noise coincided with the appearance of earthquake lights. No generally accepted physical mechanism for producing these electromagnetic emissions has been found. (King, Chi-Yu; "Electromagnetic Emissions before Earthquakes," Nature, 301:377, 1983.) From Science Frontiers #27 ... Science Frontiers ONLINE No. 27: May-Jun 1983 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Electromagnetic Noise Prior To Earthquakes March 31, 1980. Tokyo, Japan. Anomalously high electromagnetic noise was recorded during a 30-minute period preceding a magnitude 7 quake, 250 km away and 480 km deep. The emissions were detected between 10 and 1500 Hz and around 81 kHz. July 24-28, 1976. Tangshan, China. For 3-5 days before the Tangshan earthquake, unusual radio interference was experienced within 250 km of Tangshan. Several similar cases are also on record, including one in which the radio noise coincided with the appearance of earthquake lights. No generally accepted physical mechanism for producing these electromagnetic emissions has been ...
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... Short-Period Comets ACO15 Comet Reflectivities Are Similar to Those of Asteroids ACO16 Some Cometary Light Curves Resemble Those of Asteroids ACO17 New Comets Exhibit Different Brightening Behavior Than Old Comets ACO18 Anomalous Splitting of Comets ACO19 Tail-Wagging Comets ACO20 Cometary Outbursts ACO21 Comet Attrition Rates Imply Youth ACO22 No Ices in Cometary Reflection Spectra ACO23 The Blackness of Cometary Nuclei ACX OCCULTATIONS BY COMETS ACX1 Cometary Tails: Anomalous Occultations of Radio Stars AE ENIGMATIC OBJECTS AEO BRIGHT ENIGMATIC OBJECTS AEO1 Bright Objects near the Sun AEO2 Starlike Objects with Anomalous Motions AEO3 Unexplained Nebulous Objects AEX UNIDENTIFIED OBJECTS TRANSITING THE SUN, MOON, AND PLANETS AEX1 Objects Crossing the Face of the Sun AEX2 Objects Crossing the Moon's Disk AEX3 Unidentified Objects Transiting Jupiter AG THE EARTH AGB ANOMALIES IN THE EARTH'S ROTATION AGB1 Variations in Latitude AGL EARTH- ... 's Brightness AH MERCURY AHB MERCURY'S ORBITAL AND SPIN ANOMALIES AHB1 The Residual Advance of Mercury's Perihelion AHB2 Mercury's High Eccentricity and Inclination AHB3 Short Transit Times across the Sun AHB4 Mercury's Spin Resonance AHE GEOLOGY AND FIGURE OF MERCURY AHE1 The Asymmetry of Mercury's Topography AHE2 Mercury's Possible Prolate Shape AHE3 Swirl Markings AHF INTRINSIC RADIATION SOURCES AHF1 Extreme-Ultraviolet Emissions from Mercury AHO ANOMALOUS TELESCOPIC OBSERVATIONS AHO1 Mercury's Occasional Blunted Cusps AHO2 Terminator Irregularities AHO3 White Projections and Spots AHO4 Dark Linear Markings AHO5 Anomalous Brightness Temperatures AHO6 Ring of Light around Mercury's Dark Side AHX ANOMALIES OBSERVED DURING TRANSITS AHX1 Bright Spots on Mercury during Transit AHX2 Ring around Mercury during Transit AHX3 Illumination of Mercury's Disk during Transit AHZ MERCURY'S ANOMALOUS MAGNETIC FIELD AHZ1 ...
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... GEL11 The Second Purple Light GEL12 Moving Patches of Light on the Horizon Jumping Stars Post-Twilight Infrared Brightening of the Sky Extraordinary Sunsets GEM THE MAGIC OF MIRAGES GEM1 Fata Morganas GEM2 Telescopic Mirages GEM3 Lateral Mirages GEM4 Multiple Mirages GEM5 Mirages Sensitive to the Observer's Position GEM6 The Novaya Zemlya Effect GEM7 Illusions of a Flat Earth GEM8 Dynamic Mirages GEM9 Mirror or Reflection Mirages Double Moons Mock Mirages GER RADIO AND RADAR ANOMALIES GER1 Long-Delayed Radio Echos GER2 The Moon's Effect on Radio Propagation GER3 Thunderstorm Modification of Radio Propagation GER4 Stable Patterns of Electromagnetic Radiation GER5 Unidentified Radio Signals... GER6 The Humming Earth GER7 Polar Radio Blackouts GER8 Around-th e-World Transmission of High-Frequency Signals GER9 Periodic Fading of Satellite Radio Transmissions GER10 Sudden Disappearance of High Frequency Radio Transmissions GER11 ... GLA17 Curious Folklore: Auroras and Silken Threads GLA18 Correlation of Aurora Frequency with Lunar Phase GLA19 Auroras Interacting with Lunar Halos GLA20 Electrical Effects of Auroras at the Earth's Surface GLA21 Auroras and Surface Fogs GLA22 Black Auroras GLA23 Banded Skies GLA24 Millisecond Brightness Pulsations of the Night Sky GLA25 False Dawn GLA26 Auroras Following Coastlines GLA27 Challenges to the Theory of Aurora Origin GLA28 Flash Auroras GLA29 Possible Atmospheric-Laser Emission Accompanying Auroras GLA30 Mysterious Bright Streaks in the Sky GLA31 Short-Lived, Bright, Cloud-Like Patches High in the Sky Aurora-Frequency Correlated with Climate Coastlines Auroral Streamers Aligned with Wind Direction Expanding Ball-of-Light Phenomenon Infrared Banded Sky Auroral Streamers Aligned with Wind Direction Bright Lines in the Sky Auroras Associated with the Tunguska Event Luminous-Tube Phenomenon Phantom Volcanos GLB BALL LIGHTNING GLB1 ...
Terms matched: 2 - Score: 192 - 15 May 2017 - URL: /cat-geop.htm
... Science Frontiers ONLINE No. 24: Nov-Dec 1982 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Mysterious "thing" in orbit around saturn When the two Voyager spacecraft flew past Saturn, both detected strong bursts of radio emissions recurring every 10 hours, 10 minutes. New termed SEDs (Saturn Electrostatic Discharges), the period of these bursts would be matched by the period of an object rotating around Saturn at a distance of about 100,000 kilometers. Is there anything visible at this distance? Sure enough, Voyager optical instrumentation detected a thinning, possibly an actual gap, about 150 meters wide, in the B-ring at this radius. The big puzzle is why a thinness or gap is maintained over a long period of ... and how it is associated with the SEDs. (Evans, D.R ., et al; "The Source of Saturn Electrostatic Discharges," Nature, 299:236, 1982.) Comment. Could Saturn and its rings, which may be electrically charged, be some sort of electromagnetic machine, with arcing occurring at the gap? Reference. SEDs are cataloged at ARF1 in our book: The Moon and the Planets. Ordering information here . From Science Frontiers #24, NOV-DEC 1982 . 1982-2000 William R. Corliss ...
Terms matched: 2 - Score: 169 - 15 May 2017 - URL: /sf024/sf024p04.htm
... Science Frontiers ONLINE No. 95: Sep-Oct 1994 Issue Contents Other pages Home Page Science Frontiers Online All Issues This Issue Sourcebook Project Sourcebook Subjects Gamma-ray flashes in the upper atmosphere Something strange is definitely going on in the upper atmosphere, particularly above thunderstorms. We have already reported on the mysterious light flashes (SF90) and radio emissions (SF#94). Now, we record similar, possibly intimately related flashes of energy in a different portion of the electromagnetic spectrum. "Detectors aboard the Compton Gamma Ray Observatory have observed an unexplained terrestrial phenomenon: brief, intense flashes of gamma rays. These flashes must originate in the atmosphere at altitudes above at least 30 kilometers in order to escape atmospheric absorption and reach the detectors." The energies of the gamma rays in ... flashes are very high. They are typical of the braking radiation (Bremsstrahlung) from 1,000,000 electron-volt electrons. Since most of the gamma flashes originate over regions where thunderstorms are frequent, it is tempting to associate them with lightning. Ordinary lightning, however, is not energetic enough to generate the gamma flashes and, of course, it does not occur above 30 kilometers altitude anyway. G.J . Fishman et al, who reported on this new phenomenon in Science, speculate that some hitherto unrecognized, high altitude electrical discharges occur high above areas hosting thunderstorms. Possibly, upwardly directed lightning (" rocket lightning") is involved in all three of the newly found flashes in the radio, optical, and gamma portions of the electromagnetic spectrum. (Fishman, ...
Terms matched: 2 - Score: 169 - 15 May 2017 - URL: /sf095/sf095g15.htm
... , the age of the universe was generally taken as about 20 billion years. The "old" Hubble Constant, however, was determined from the measurements of the distances to rather close galaxies and then assuming that the Constant thus derived held for the entire universe. The new yardstick reaches farther out into space. It is based upon the observation that the broadening of galaxy's 21-centimeter radio emission depends upon its rate of rotation, plus the belief that the rate of rotation is proportional to its brightness! This "new" Hubble Constant is 95 kilometers/second/ megaparsec, which translates into an age of only 10 billion years for the universe. Both the 10-billion-year and 20billion-year camps claim strong supporting evidence for themselves and also point to serious difficulties ... the opposing method. The stage is thus set for a delightful controversy. (Hartline, Beverly Karplus; "Double Hubble: Age in Trouble," Science, 207: 167, 1979.) From Science Frontiers #10, Spring 1980 . 1980-2000 William R. Corliss ...
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... mystical experiences, depending on local cultural values. In Denver and Rangely, Colorado, and Attica, New York, these sightings correlate with earthquakes and injection of fluid into the earth for waste disposal or secondary oil recovery. In the New Madrid, Missouri, area, luminosities are highly correlated with flooding on the Mississippi River and tend to occur 9 months after high water. Enough luminosities, and radio emissions in the ULF band, are observed weeks to months before earthquakes to suggest that they be tested as a possible forecasting tool for the select places where they occur. The pattern of occurrence may delineate the progress of tectonic strain and so indicate the direction or even location of a future epicenter. Fluid moving through developing cracks may be the source of electrical energy which powers the EQL. A ... of potential mechanisms should be considered, involving tectonic strain, exoelectron emission, streaming potential, EM excitation of water droplets, and the fault zone as an EM waveguide." (Derr, John S., and Persinger, Michael A.; "Fluid Injection Causes Luminous Phenomena," paper presented at the 11th Annual Meeting, Society for Scientific Exploration, Princeton, NJ, June 11, 1992.) From Science Frontiers #82, JUL-AUG 1992 . 1992-2000 William R. Corliss ...
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